Dump-car.



Nos26,s74. PATENTED JULY 24, 1906. s. OTIS. DUMP GAR.

APPLICATION FILED MAR. 5, 1908.

2 SHEETS-SHEET 1.

. b1 Mew-7". a W ajvncer 06415,

PA-TENTED' JULY 24, 1906.

s. QTIS., DUMP GAR. APPLIOATION'IILBD MAB.5, 1906.

2 SHEETS-SHEET 2.

F To all whom it may concern:

UNITED STATES- PATENT OFFICE.

SPENCER OTIS, OF CHICAGO, ILLINOIS, AssIeNoa :ro NATIONAL DUMP oARcoMPANY, or AUGUSTA, MAINE, A CORPORATION OF MAI DUMP-OAR.

' Specification of Letters Patent.

Application filed Mai-ch 5.1906. seatin 304.242.

, Paten'tedJuly 24,

Be it known that I, SPENoER Orrs,a citize of the United States, residing at Chicago, in

the county of Cook and State of Illinois, have:

invented certain new andnseful Im rove- "ments in Dump-Oars, of which the fol owing is a specification. 2

My invention relates to dump-cars having dumping-doors throughwhich the load may be' discharged, and has for its object to ,pro-,

" vide an'improved mechanism for operating the doors. i

- My invention consists in the combinations and details hereinafter described and claimed. In the accompanyin drawings, Figure 1 is a sectional elevation 0% a portion of a dumpcar,showin'gmy improved operatin means, the door being in closed position. ig. 2 is a sectionalielevation of a portion of a'dump omitted to show the operating mecha dump-car.

car, showing the dumping-doorin open .po-

sition. -Fig. 3is a plan view, certaln. parts by a link (1, connected to the bar and to acrank portion 11, connected to the shaft. The track b is formed at its outer end with a short horizontal portion b", beneath which the bare rests when the door is in closed posi tion, and'with an inclined portion b adja cent the horizontal portion. By reason of this construction it is apparent that when the bar 0 is withdrawn from the horizontal por- .tion the Wei ht of the door, or-the weight of [the door an its load, will cause the door to open automatically and assume the position 5 owninFig. 2;

It has turning the operating-shaft e, and I have shown in Fig. 3 a suitable form of manuallyoperated means consisting of a gear-wheel e and a worm e, the operation of which will be readily understood without particular description, reference being made to my Patent N 0. 804,970, November 21, 1905, for a more that the spring h maybe made 0 hitherto been customary to close the doors by manually-operated means,

complete description of the worm; ear.

The particular hand-operated means, ow-.

ever, forms no part of my invention. a It is desirable, however, to provide some means whereby the door will be closedautomatically after. the load is discharged; Toacplacea sp'rin h, surrounding a rod it, having .the chainbing so connectedto the shaft com lish this result, I provide the following me'c anism': Within the center. sill of the car, which is composed, as is ordinarily the case, of the side members f and topmemb'erf", I

I a headh he outer end of this rod isIcon-' Elected by a chain 9 with the operating-shaft that when the latter is turned to open the door the chain will be wound u on the shaft,

as clearly shown in- Fig. 2L t is a parentstrength as maybe necessary to close the door when'the load isreleased+that is, the

s ring may more than counterbalance the;

such

oor-or, if so desired,' it maybe made of less strength, so .as to partially. counterbalance" the weight of the door and assist closing In the latter'case it will'be nee to-o eratethe ear-mechanism at the endof t e car, ghoug ,of course, as readilyunderstood, muc less power will be required to close the door. I prefer, however, to make the'sprin'g .of such strength thatit will b'e sufficient .to

close the-door; It will be understood thatif the spring should fail to. operate for any reasonas, for instance,- the parts b.ecomingi frozen b ice in cold wather the manually-- mechanism may be used toassist o crate t e's ,ring,

'1. ;In a dump-car, a hinged dumping door formin a part of the bottom ofthe car, automatica ly-actuated means connected to the door. to close the door, and manually-operated means to assist the door-closing means.-

2.; In a dump-car,-a dumping-door, automatic means for closing the door, andwauX- iliary means :to assist in closing the door.

3 A dump-car having a dumping-door in itsbottom,andautomatically-o eratedmeans movable longitudinally of the oor to operate the door.

4. A dump-car having a-diimping door in 1 its bottom, and spring-actuated means .mov-

. able longitudinally of the door to operate the door;

5. A dump-car having a bottom contaim ing a dumping-door, llmejahs mounted be neat'h the door to hold the door closed and luovable longitudinally thereof to permit the doorto-op'en and to close the door, and autonatic means for operating the door-closing means. 6. A dump-car having a bottom contammg a dumping-door, a bar movable lon itudldually of the door to close the door, and autoneoted to the bar-operating means to assist 1n OlOSlII" the doors.'

8. A dump-oar having a bottom containing dumping doors, a reciprocating bar mounted beneath the doors and in contact with the under side thereof, a crank-shaft mounted in the car-frame beneath the doors, connections between the crank-shaft and the reciprocating bar, and automatic means for operating the crank-shaft to cause the closing of the doors. V l

'9. A dump-car having a bottom containing a dumping-door,-means movable lon itudin'al-ly of the door to close the door, an a spring connected to the door-closing means to cause the automatic operation of the door- 7 closingfmeans.

10. dump-0arhaving a bottom containing a dumping-door, a bar movable longitudinally of the door to close the door, and

spring-operated mechanism connected to the bar for operating the bar.

11. A dump-car having a bottom containing'a dumpingdoor, an inclined track having a horizontal'end portion attached to the under side of the door, a bar mounted beneath the door resting upon the horizontal end portion of the track to hold the door closed, means for Withdrawing the bar from the horizontal portion of the track to permitthe door to open, .and'automatic means forv for causing a movement of the bar to close the door.

13. A dump-car having a bottom contain-- 6.0 ing a horizontal end portion attached to the under side of the door, a reciprocating bar ing a dumping-door, an inclined track havmounted in the car-frame and traveling on the track, and spring-actuated. means tor.

gausing a movement of the" bar to'close the oor. v SPENCER OTIS.

Witnesses:

W. T. JoNEs, I g I NORMAN A. STREET- 

